lacking
adj. 缺少的；没有的
sp. 动词lack的现在分词.
近义词：missing，wanting，absent，deficient，nonexistent，
英英释义
Adjective
- inadequate in amount or degree;
"a deficient education" "deficient in common sense" "lacking in stamina" "tested and found wanting"
- nonexistent;
"the thumb is absent" "her appetite was lacking"
例句
用作形容词(adj.)
- What seems to be lacking is a suitable abstraction for programming pervasive computing environments.看上去缺少的东西正好适合于编程普及运算环境。